methyl <2E,4E,6R*<1S*-<1α,3α,5α,6α,8β>>>-6-(6-hydroxy-1,4,8-trimethyl-2,9-dioxabicyclo<3.3.1>nonan-3-yl)-4-methylhepta-2,4-dionate 在
pyridinium chlorochromate 作用下,
以
二氯甲烷 为溶剂,
反应 13.0h,
以97%的产率得到methyl <2E,4E,6R*<1S*-<1α,3α,4β,5α,8β>>>-4-methyl-6-(6-oxo-1,4,8-trimethyl-2,9-dioxabicyclo<3.3.1>non-6-en-3-yl)hepta-2,4-dionate